A girl jumps down from a tree to the grass below. The higher her jump,_______.

Physics

1 answer:

olga_2 [115]2 years ago

4 0

Answer:

D. The more the change in gravitational potential energy.

Explanation:

From Physics, we know that change in gravitational potential energy ( $\Delta U_{g}$ ), measured in joules, is directly proportional to change in height ( $\Delta h$ ), measured in meters. Then, the higher her jump, the more the change in gravitational potential energy.

We cannot speak of elastic energy, since statement of the problem does not speak of any deformable system (i.e. spring) in any form.

Therefore, the correct answer is D.

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Answer:
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Explanation:
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3 years ago

A cycle track is 500 metres long. Amy completes 10 laps. She travelled at an average speed of 12.5 metres per second. She puts o

yanalaym [24]

The fast lap is irrelevant to the question, because it didn't happen
until after the 9 laps that you're interested in.

To be perfectly technical about it, we don't actually have enough
information to answer the question. You told us her average speed
for 10 laps, but we don't know anything about how her speed may
have changed during the whole 10 laps. For all we know, maybe
she took a nap first, and then got up and drove 10 laps at the speed
of 125 metres per second. That would produce the average speed
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IF we can assume that Amy maintained a totally steady pace through
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3 years ago

a car headed north at 15 m/s accelerates for 4.25 s to reach a velocity of 28.3 m/s. What is the acceleration of the car?

Liono4ka [1.6K]

<u>Answer:</u>

The acceleration of the car is $3.13 m/s^2$

<u>Explanation:</u>

In the question it is given that car initially heads north with a velocity $15 m/s$ . It then accelerates for $4.25 s$ and in the end its velocity is $28.3 m/s$ .